Machine tool performance evaluation apparatus and performance evaluation system equipped with the same

Abstract

The present invention relates to a performance evaluation system constructed to efficiently collect and accumulate analysis conditions for use in three dimensional model analysis. The performance evaluation system 50 is constructed by connecting a plurality of performance evaluation apparatuses 1 provided in each machine tool to a management apparatus 52 via a network 51 . Each performance evaluation apparatus 1 comprises an analysis data storing section 12 in which model data and condition data are stored, a detecting device 4 which detects actual performance, an analyzing section 13 which analyzes the performance, an evaluation determining section 15 which evaluates the correctness of the analyzed performance data, and a data updating section 16 which changes and updates the model data and the condition data. The management apparatus 52 comprises an analysis data accumulating section 61 which accumulates the model data and condition data received from the performance evaluation apparatus 1.

What is claimed is:  
     
       1. A machine tool performance evaluation apparatus which is provided for an NC machine tool equipped with a numerical controller for controlling operation of a motion mechanism in accordance with an operation command signal, and which evaluates performance of said motion mechanism, comprising: 
       analysis data storing means for storing three dimensional model data of said motion mechanism and condition data for performance analysis;  
       detecting means for detecting actual performance of said motion mechanism of said NC machine tool;  
       analyzing means for analyzing the performance of said motion mechanism, based on said operation command signal in said numerical controller and on the three dimensional model data of said motion mechanism and the condition data for performance analysis stored in said analysis data storing means;  
       data accumulating means for storing actual performance data of said motion mechanism detected by said detecting means and performance analysis data analyzed by said analyzing means; and  
       evaluation determining means for evaluating the correctness of said performance analysis data by comparing said performance analysis data with the actual performance data of said motion mechanism stored in said data accumulating means.  
     
     
       2. A machine tool performance evaluation apparatus according to  claim 1 , further comprising data updating means for updating, in accordance with the result of the evaluation in said evaluation determining means, the data stored in said analysis data storing means so that said performance analysis data becomes correct when said evaluation result shows that said performance analysis data is not correct. 
     
     
       3. A performance evaluation system constructed by connecting a machine tool performance evaluation apparatus according to  claim 2  to a management apparatus via a network, wherein 
       said management apparatus comprises analysis data accumulating means for accumulating the three dimensional model data of said motion mechanism and the condition data for performance analysis, and  
       the three dimensional model data of said motion mechanism and the condition data for performance analysis stored in said analysis data storing means of said performance evaluation apparatus and updated by said data updating means are transmitted at regular or irregular intervals to said management apparatus via said network and accumulated in said analysis data accumulating means.